The Guinness Book of World Records has bestowed the honor of fastest-growing gaming system upon Apple's iPhone 4, as well as noting that the App Store itself and several games in it also have set records.

An estimated 1.5 million iPhone 4s were sold on launch day, far eclipsing any other gaming system. Guinness noted that the PlayStation Portable only sold 200,000 units in its first day, and it was a full week until the Nintendo DS pushed 500,000 consoles out the door.

"The release of the iPhone has not just changed the mobile industry, but the video game world too," Guinness' gaming editor Gaz Deaves says in a statement. The organization also noted that Apple's App Store holds the record for the largest downloadable video game store with 37,362 titles available.

Guinness did not provide numbers from the Android Market for comparison purposes, but noted the App Store was well ahead of other competitors including Xbox Live Arcade (around 1300) and Wii's Virtual Console service at 576.

Angry Birds is also receiving honors for being the "Top Paid-For App Store Game in Most Countries." The title is the top paid download in 67 countries on the App Store with an estimated 6.5 million paid downloads.

Other records for iOS games include Tap Tap Revenge for the most popular App Store game in history with 15 million downloads, and Plants vs. Zombies set two records in the strategy category. It was the highest grossing launch with $1 million in revenue for developer PopCap in the first nine days, as well as the fastest selling with 300,000 downloads in that same period.